Public domain
Plant breeders' rights are granted for a limited term. Upon expiration, the variety enters the public domain: its seeds can be propagated and sold without the rights holder's license.
Recent years are the most sought-after: the variety is free to use but still in production.
Lactuca sativa L. · Lettuce
CW. PANNEVIS BV (NL)
Zea mays L. subsp. mays (Maize Group) · Maize
Nickerson SA (FR)
Beta vulgaris Sugar Beet Group · Sugar beet
Lion Seeds LTD (GB)
Gossypium hirsutum L. · Upland cotton
CSIRO COTTON RESEARCH UNIT
Vicia sativa L. · Common vetch
Golden West Seed Co.
Zea mays L. subsp. mays (Maize Group) · Maize
Mycogen (USA)
Raphanus sativus L. var. sativus · Radish
Enza Zaden Beheer B.V.
Zea mays L. subsp. mays (Maize Group) · Maize
Nickerson SA (FR)
Zea mays L. · Maize
PIONEER HI-BRED INT
Triticum aestivum L. · Bread wheat
HAO-DEMETER - Cereal Institute
Vicia sativa L. · Common vetch
Golden West Seed Co.
Zea mays L. subsp. mays (Maize Group) · Maize
SEMENCES NICKERSON
Dianthus caryophyllus L. · Carnation
NICOLE BERBERET|HENRI BLANC
Dianthus L. · Carnation
Barberet, Nicole|Antibes, France / Blanc, Henri|Antibes, France / Giorgio, Antonio Di|San Remo, Italy / Giorgio, Renato Di|San Remo, Italy
Dianthus L. · Carnation
Barberet, Nicole|Antibes, France / Blanc, Henri|Antibes, France / Giorgio, Antonio Di|San Remo, Italy / Giorgio, Renato Di|San Remo, Italy
Dianthus L. · Carnation
Barberet, Nicole|Antibes, Italy / Blanc, Henri|Antibes, Italy / Giorgio, Antonio Di|San Remo, Italy / Giorgio, Renato Di|San Remo, Italy
Dianthus L. · Carnation
Barberet, Nicole|Antibes, France / Blanc, Henri|Antibes, France / Giorgio, Antonio Di|San Remo, Italy / Giorgio, Renato Di|San Remo, Italy
Dianthus L. · Carnation
Barberet, Nicole|Antibes, France / Blanc, Henri|Antibes, France / Giorgio, Antonio Di|San Remo, Italy / Giorgio, Renato Di|San Remo, Italy
Dianthus L. · Carnation
Blanc, Henri|Antibes, France / Giorgio, Antonio Di|San Remo, Italy / Giorgio, Renato Di|San Remo, Italy
Dianthus L. · Carnation
Barberet-Maiolino, Nicole|Antibes, France / Blanc, Henri|Antibes, France
Dianthus caryophyllus L. · Carnation
NICOLE BERBERET|HENRI BLANC
Dianthus L. · Carnation
Barberet, Nicole|Antibes, France / Blanc, Henri|Antibes, France / Giorgio, Antonio Di|San Remo, Italy / Giorgio, Renato Di|San Remo, Italy
Dianthus L. · Carnation
Barberet-Maiolino, Nicole|Antibes, France / Blanc, Henri|Antibes, France
Lactuca sativa L. · Lettuce
SLUIS & GROOT BV (NL)